CANOGA PERKINS 2345 T3 Fiber Optic Modem - Manual (Page 9)

EdgeAccess Universal Chassis System
Model 2345 User Manual 1-3
The 2345 supports both full modem redundancy, with two modems, and fiber redundancy, through
dual-path OLIMs. You can enable automatic or manual redundancy or disable the option.
Dual-path modules provide redundancy for the fiber link. The two transmit (Tx) outputs and two
receive (Rx) inputs are connected on different fiber. Both Tx output transmit the same data; one Rx is
active and the other is inactive. If data is lost on the active Rx, the module switches automatically to
the inactive Rx and you can troubleshoot while data transmission continues.
When the redundant mode is set to Auto and the link fails, the software logs an alarm and switches to
the secondary link. If the redundancy mode is set to Manual and the link fails, the software logs the
alarm, but does not switch to the secondary link.
For details on setting up the hardware for redundancy, see Chapter 2. For details on setting up the
software, see "Set Up Redundancy" on page 3-12.